Lasting-machine



(No Model.) 2 Sheets-Sheet 1' G. MoKAY & H. P. FAIRFIELD.

LASTING MACHINE.

N0..458,0.01. Patented Aug. 18,,1891.

%rm 121- 1 I 9 "5' (No Model.) 2 Sheets-Sheet 2.

G. McKAY & H. P. FAIRFIELD. LASTING MACHINE.

No. 458,001. Patented Aug. 18, 1891.

witnesses: Inventor's annals PETERS co., mom-Lima, wpsums'rou u c UNITEDSTATES PATENT OFFICE.

GORDON MCKAY, OF NEVPORT, RHODE ISLAND, AND HADLEY P. FAIR- FIELD, OFMEDFORI),'MASSACHUSETTS, ASSIGNORS TO THE MOKAY & COPELAND LASTIN GMACHINE COMPANY, OF PORTLAND, MAINE.

LASTING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 458,001, dated August18, 1891.

Application filed February 6, 1891. Serial No. 380,493- (No model.)

To all whom it may concern:

Be it known that ,we, GORDON MOKAY, of Newport, county of Newport, Stateof Rhode Island, and HADLEY P. FAIRFIELD, of Medford, county ofMiddlesex, State of Massachusetts, have invented an Improvement inLasting-Machines, of which the following description, in connection withthe accompanying drawings, is a specification, like letters and figureson the drawings representing like parts.

This invention is intended as an improvement on that described in UnitedStates application, Serial No. 339,803, filed February 10,1890, themachine described in the said application being an improvement on thatdescribed in United States Patent No. 250,450. In the machine describedin the said application the toggle-lever for drawing up or lifting thedevices carrying the pinchers or pullers has always to be straightenedbefore the pinchers are opened to release the upper and before the sidejaws are closed, and in practice with some classes of uppers suchstraightening is unobjectionable; but in other classes of uppers thestraightening of the toggle is apt to put too much and an injuriousstrain on the upper. One part of this present invention is to provide alasting-machine with means whereby when the upper of the particular shoebeing lasted has been sufficiently stretched the further movement of thetoggle, and consequently further strain of the pinchers or pullers onthe upper, will be arrested, while the usual side-closing devices act tolay the edges of the upper over upon the inner sole laid upon the last,supported in usual manner. In the machine described in the applicationreferred to the pinchers were closed upon the upper by hand, one at atime; but herein the machine has been provided with pincher-closingdevices which are automatic in their action, the said devices being,however, so constructed that in their closing movement they adaptthemselves to the particular thickness of the upper where the particularpincher grasps it, and the devices to close the pinchers are so shapedthat the hold of the pinchers is stronger in proportion to the thicknessof the upper. WVe have also provided the machine with means whereby thedevices which carry the pinchers or pullers may not only be adjustedhorizontally to lasts of different length, but also in case it isdesired to draw the pinchers in a line inclined to a horizontal planethat that may be done, so as to enable the strain upon the upper to beadapted to the spring of the last. We have also provided the machinewith a pincher-releasing cam which is so constructed or shaped that thepinchers, when carried inwardly by the side-lasting devices, will beautomatically released from the upper at the proper time,notwithstanding any change in their longitudinal position owing todilferent length of last, for it will be understood that the particulartime at which the pinchers should be released will depend upon theparticular width of the last, which width varies for lasts of dilferentlength. We have combined with the toggle for drawing the pincherslocking devices to lock the said toggle in its more or less straightenedposition, the said locking devices being automatically disengaged as thehead carrying the pincher-lifting devices is raised after the pinchershave been released and preparatory to the removal of the lasted shoe.

Figure 1 in side elevation, partially broken out and in partial sectionin the line 501 of Fig. 2, looking to the right, shows a sufficientportion of alasting-machine with our present improvements added toenable our invention to be understood, the heel and toe rests for thelast and the closing-in devices to lay the upper over upon the lastbeing omitted, the rod 18, to be described, carrying the evener or beingbroken off to show the rod 13 within it and the link 1) beyond inelevation. Fig. 2 is a partialright-hand elevation of the parts shown inFig. 1 above the sidelevers, the jack for supporting the last, thecolumns, and the pinchers being omitted, the upper being in section;Fig. 3, a partial top or plan view of some of the parts shown in Fig. 1,chiefly to show the devices instrumental in lifting the head-plate b andlifting-bar 48, the shaft, hand-lever, and chain-segment, chain, and rodshown in Fig. 1 being omitted; Fig. 4, a section in the curved line :0,Fig. 2, of the devices employed to adapt the closing of the pinchers tothe material between them, whatever may be its thickness. Figs. 5, 6,and 7 are details of the devices for locking the toggle and forreleasing the said lockin g devices. Fig. 8 shows the cam device foradjusting the pincher-carrying slide-bars in the direction of the lengthof the last; Fig. 9, an enlarged detail of one of the pinchers andclosing devices; Fig. 10, a top or plan View of bar 48 detached; Fig.11, a detail of the lever 85, shown in Fig. 2.

The frame-work A, having the upright or column A the jack g surroundingit and carrying the side levers 66, the cam-shaft- A having the pulley Afast thereon, the sector a its attached chain a rod a, strap of, rod cf,the toggle a, to which the latter rod is attached, the lever (L12, link12 connected to it, the slide-rods 18, the evener-levers 21, connectedto their lower ends, the plate if, having in practice at its lower edgesuitable hold-downs, the cam 13, loose on the shaft A alongside of thepulley A and provided with the projection 2*", the lever h, thecam-plate 23, and the lever 13 connected at B to the rod B the links 6768, and the last 1 are and may be all substantially as in the saidapplication, where the said devices are designated by like letters andfigures. It will be understood that the pulley A and cam 13 will have aclutch mechanism between them, which will become effective to lock thecam B to the said pulley whenever the lever h is moved out of engagementfrom the projection r, and that the said levers 66 in practice willcarry side-lasting appliances to act upon the edges of the stretchedupper between the pinchers and the last to lay the upper over upon thebottom of the last or upon the inner sole thereon and at the same timemove the pinchers inwardly, as in the said application.

The lever 19, pivoted at 2 and shaped as best shown in Figs. 1 and 3, isjointed at its front end at 3 to the head-plate b shaped as best shownin Figs. 2 and 3, said head-plate being double-walled at its upper endand provided with horizontal curved slots 4 for the reception andsupport of the blocks 5, through which slide the bars 18, to the lowerends of which are pivoted the evener-le vers 21. These blocks havejournals at their opposite sides, which extend through the slots 4,beyond which the said journals at the front and rear sides of the plates12 receive upon them the lower ends of the lazy-tongs links 6, jointedtogether at 7 between their ends and jointed at their upper ends at 8 tosleeves 9, loose, one on each rod 18. The two middle sleeves (see Fig.2) are connected by links 10 with a hollow guide 12, the pivot for thecentral pair of lazy-tongs links being carried by the lower end of thesaid guide. The slide-rods 18 in this present invention are hollowinstead of solid, as in the said application, and each of saidsliderods'receives through it a pincher-closing rod 13, provided,preferably, at its upper end with a roller-stud and having at its lowerend an equalizer-lever 19, to the opposite end of which is pivoted thepincher-closing devices 30, shown as cams adapted to be lowered andraised, as desired, between studs 31 and 32 (see Fig. 9) of thepincher-jaws 33 34, which are adapted to grasp the edges of the upperalong the sides of the last, the jaws of the said pinchers being pivoteddirectly upon the ends of the evener-levers 21. The jaws 34, pivoted at34* on the jaws 33,have connected to them and to the latter jaws springs35, which normally act to open the said jaws. Each jaw 34'. has aratchet-plate 36, which is engaged by one end of a /\-shaped pawl 37,pivoted upon a part of the jaw 33, each of the said pawls engaging byits outer end one of the said ratchet-plates 36 to keep the said jaws intheir closed condition, as when the jaw-closing devices 30 are loweredbetween the studs 31 and 32. The inner arms of these pawls, as thepinchers are moved toward the longitudinal center of the last by thesidelasting devices, as described in the said application, act againstthe edge of a suitable releasing-plate 38, connected to the plate I),(see Fig. 1,) which causes the said pawls to be turned to release thesaid ratchet-plates and let the jaws be opened by the springs 35. Inpractice the edge of the releasing-plate will be of cam shape, so thatthe said pawls will contact sooner or later with the edges of the saidplate, according to the adjustment of the rods 18 with relation to thelength of the last, by turning the plate 23, common to the said patcut,the said plate having atits center of motion, as shown in Fig. 2, thesecond rod 18 from the left, the said rod in any case being that onecarrying the pinchers, which are to grasp the upper about midway of thelength of the last. The cams 30 are of such shape that their lower endsact quickly to close the jaws approximately upon the upper, the re-.

mainder of the cams being so varied in their inclination as to enablethe jaws to grasp a thick part of the upper with increased force. Therods 18 are provided with collars 4.4, which rest on springs 45, thelower ends of which in turn rest on blocks 46, having at two sidesjournals which enter curved slots 47 in two parallel lifting-bars 48,supported by the links If, connected to one end of a double lever (L12,pivoted at 49 on the column. The lever a has two rigid depending ears50, which receive the pivot-pin 51, on which turns the toggle-levermember a, jointed at 52 to a link 53, constituting the second member ofthe said toggle, and jointed at its lower end between arms 54: of thedouble lever 12, pivoted to the column at 99 and to the plate 5 at 55,(see Fig. 3,) the link 53 constituting one member of the toggle to actthrough lever a and links 71 upon the bars 48 and lift the rods 18 andtheir connected pinchers or pullers. The toggle-lever a is straightenedthrough the rod a connected toit, and to the belt a, rod a, chain a, andsector (L as in the application referred to, the pulley A engaging thebelt 0. frictionally. In this present invention the sector a is fast onthe rockshaft 56 at the upper endof the column, and fast on the saidrock-shaft is a lever 57, having at one end a pin 58. A hand-lever 59,mounted loosely on the said rock-shaft, has a latch- 60 pivoted thereonand acted upon by a spring 61 to normally keep the upper end of the saidlatch under the said pin 58, so that when the hand-lever 59 is turnedtoward the column in opposition to the spring 62 the upper end of thesaid latch acting against the said pin 58 will turn the said rock-shaftand with it the sector, drawing the rod a and causing the pulley to acton the strap a and straighten the said toggle a 53 more or less. Whenthe operator considers that the upper has been sufficiently stretched,he turns the latch 60 away from under the said pin 58, which stops theupward-pulling action of the pinchers on the upper. The movement of thetoggle referred to takes place to lift the lever a, while the usualhold-down rests on the inner sole on the last. The latch having beenremoved from the pin 58, the hand-lever may be turned on the rock-shaft56 until the pin 70, carried by the said lever, comes in contact withthe upper end of the lever h which moves the lever h to effect therelease of the cam B, so that it is clutched to the rotating pulley A tooperate as described in the said application and cause the side-lastingdevices employed to lay the upper over uponthe inner sole. been more orless straightened, according to the upper being lasted, the rod 71,jointed to the toggle at 52 and having very steep screw-threads, (seeFig. 5,) is drawn to the right in Fig. 1, the said screw-threads actingwithin a ratchet-nut 72, rotating the said nut in the direction of thearrow thereon, Fig. 6, and the said nut is held in the position in whichit is turned by two pawls 73, one being a little shorter than the other,the said pawls being pivoted at 74 in a cage 75, pivoted to the frame at76. The pawls referred to may be released whenever it is desired tobreak the toggle by means of a trip-lever 77, pivoted at 78 on an ear ofcolumn A and acted upon by springs 79, the lower end of the said leverhaving a cam-toe 80, which when the lever b is lifted, as will bedescribed, is acted upon by a toe or incline 81.0n the said lever, (seeFig. 6,) the releasing of the ratchet-nut being therefore automatic.

To effect the lifting of the entire apparatus carrying the pinchers andthe plate 19 after the release of the pinchers from the upper, the rodd, common to the said application, is connected to a lever d having atits inner end an adjusting screw or device 74, which as the lever 61 ismoved through the lever B causes the said screw to act upon the lever band lift the same and its connected parts far enough above the lastedshoe to enable the same to be removed from the machine When the togglehas and a new shoe supplied inits place. WVhile the parts are beinglifted as described, the small toggle, consisting of the link 75,pivoted to the lever b and connected at its lower end to a hand-lever 75 having its fulcrum upon a stud 200 of the frame-work, is straightened,thus locking up or in elevated position the said parts ready to belowered upon the Work, when desired, by breaking the said toggle byhand. The guide 12 referred to receives within it a double bar 7 7having at its upper end a pivot 78, upon which is mounted to turn alever 79, the said lever being connected at one end by a double link 80to one end of the double lifting-bar 48, the opposite end of the saidlever being represented as being connected by a cord 81 to a pulley 82,having a handle 83, the pulley being pivoted upon a stud 8 1 at theopposite end of the lifting-bar 48. This double bar 7 7, below the pin78, receives between it the U-shaped center of a lever 85, (shown insection in Fig. 1 and separately in Fig. 11,) the said lever having itsfulcrum on a stud 86 of the double bar 7 7, the said lever having itstwo ends extended in opposite directions from the said pivot 86, one endbeing, however, in front of and the other behind a pair ofequalizing-levers 88 and 89, the said equalizing-levers having each asuitable roller or other stud 90, which enters a slot, as 91, in one endof the said U-shaped lever. The under sides of the levers 88 89 arecurved in shape and act as tracks against which bear or run theroller-studs at the upper ends of the sliderods 13, carrying'thepincher-closing clamps 30, so that when the plate 23 is turned to movethe rods 18 in the direction of thelength of the last to adapt thepinchers to lasts of different lengths the said rods 13, in whateverposition they may occupy, owing to the adjustment of the slide-bars 18,being subjected to equal pressure, or that the force applied on thepincher-closing device will be equal throughout.

To cause the cams 30 to act to close the pinchers, the operator willengage the lever 83, turn the same, and through the cord 81 draw downone end 'of the lever 79, depressing the double bar 77, and with it theU- shaped lever pivoted between its sides and receiving in its slots thecenter pin or roll of the equalizing-levers 88 and 89. One of the bars18viz., the second one from the right in Fig. 2-has an upward extensionwhich is slotted, as at 15 to receive the prolonged end of thatroller-stud or center pin connected with the lever 89; but inasmuch asthe second bar from the left in Fig. 2 does not change its position thesaid bar does not need the. said extension to receive the center pin ofthe lever 89. As the levers 88 and 89 descend they tip about the pins 90as centers, and the U-shaped lever also tips about its center pin 86,which enables the downward pressure to be the same on the rods 13whatevermay be the position of the said rods with relation to IIO eachother owing to adjustment for lasts 01": dilferent lengths.

It is not intended to limit the invention herein contained to the exactshape of the levers employed to actuate the plate 5 or to actuate thedouble lifting-bars; nor is it intended to limit the invention to theexact shape of the equalizing-levers or devices which act upon the upperends of the rods 13.

Te have shown-the screw and ratchet nut and pawls as a means for lockingthe togglelever in any desired position; yet it is not intended to limitthis invention to the exact locking device, for any equivalent wellknownmechanical device may be used instead.

We claim- 1. In a lasting-machine, a vertically-movable bar adapted inits vertical movements to cause a series of pinchers to strain the upperabout the last, a series of pinchers, and a toggle to actuate the saidbar vertically, combined with a locking device to hold the said togglein any desired position, according to the strain wished to be put uponthe upper, substantially as described.

2. In a lasting-machine, a vertically-movable bar adapted in itsvertical movements to cause a series of pinchers to strain the upperabout the last, a series of pinchers, and a toggle to actuate the saidbar vertically, combined with a locking device to hold the said togglein any desired position, according to the strain wished to be put uponthe upper, and with a releasing device to automatically release the saidlocking device to per mit the toggle to be broken when desired,substantially as described.

3. In a lasting-machine, a friction pulley or device, as A a. sector, atoggle-lever, connections between the same adapted to be actuated orstarted by the said pulley to straighten the said toggle, a hand-leverhaving a tripping device by which to actuate the said sector for agreater or less distance, anda clutch-pulley and cam actuated by it,combined with a trip ping device for the said cam, which tripping deviceis adapted to be actuated by the said lever after the sector referred tohas come to rest, substantially as described.

4:. In a lasting-machine, a series of bars having pivoted eveners andnippers attached thereto at opposite sides of the fulcra of the eveners,combined with a series of rods having pivoted equalizers, andnipper-closing devices carried by each equalizer at opposite sides ofits fulcrum, to operate substantially as described.

5. In a lasting-machine, a series of longitudinally-movable rods andconnected pinchers, combined with blocks constituting bearings for thesaid rods, and means to adjust the said blocks to enable the said rodsto be put into positions more or less inclined with relation to ahorizontal plane, to thus accommodate the pinchers to the spring of thelast, substantially as described.

U. In a lasting-machine, a series of longi tudinally-movable rods andconnected pinchers, combined with blocks constituting bearings for thesaid rods, means to adjust the said blocks to enable the said rods to beput into positions more or less inclined with relation to a horizontalplane, to thus accommodate the pinchers to the spring of the last, andwith means to adjust the said bars horizontally with relation to eachother for lasts of different lengths, substantially as described.

7. In a lasting-machine, a series of longitudinally-movablespring-supported rods having attached pinchers, a series of blocksthrough which the said rods pass, and liftingbars provided with curvedslots and means to actuate the said lifting-bars to cause the pinchersto stretch the upper, substantially as described.

8. In a lasting-machine, a lifting-bar, as 48, a series oflongitudinally-movable bars, pinehers carried thereby, collars throughwhich the said bars pass, a slotted plate, as U to support the saidcollars, a series of collars connected to the upper ends of the saidrods, and a series of lazy-tongs to connect the collars referred to, tooperate substantially as described.

9. In a lasting-machine, a series of longitudinally-movable slide-barshaving attached pinchers, and a series of rods having pincherclosingcams, combined with equalizing-levers to act upon the upper ends of thesaid rods 13 to equalize the movement of the pincher-closing devices,according to the diiferent adj usted positions of the said rods,substantially as set forth.

1.0. In a lasting-machine, a series of pinchers to grasp the upper aboutthe last, combined with a series of cam-shaped pincherclosing deviceshaving cam-grades, as shown, to operate in succession, the saidpincherelosing devices being adapted to close the said pinchers andadapt them to the thickness of the upper between them, for the purposesset forth.

11. In a lasting-machine, a series of pinchers to grasp the upper,aseries of cam-shaped pincher closing devices, and means to operatethem, combined with a cam plate or device 38, and with meansintermediate the pinchers and the said cam-plate to release the pinchersfrom the upper, substantially as described.

12. A guide-plate b aseries of guide-blocks supported thereby, aseriesof slide-bars therein having connected pinchers, a lifting-bar, a seriesof guide-blocks carried thereby, and means to lift the said lifting-barand adjust the said slide-bars in the direction of the length of thelast, substantially as described.

13. The jaws or pinchers, eveners 21, and slide-rods, combined with theseries of pincher-closing cams differentially graded, and actuatingdevices therefor, whereby the pinchers are closed automatically,substantially as described.

14. In a lasting-machine, the following instrumentalities, viz: a plateor head having curved guideways, a series of guide-blocks, means toconnect said blocks,a lifting-bar, as 48, and aseries of slide-rodshaving connected pinchers orpullers, the said slide-rods occupyiug aninclined or radial position with relation to the last, and means to movethe said rods longitudinally in the said lifting-bar to actuate the saidradial lines, substantially as described.

15. In a lasting-machine, the following instrumentalities, viz: a plateor head, a series of slide-rods therein having connected pinchers orpullers, a lifting-bar to actuate the said slide-rods, a lever and linkto which the said 15 lifting-bar is joined, a toggle-lever to move thelever having the attach ed link, and means to look the said toggle-leverin any desired position more or less straightened, for the purposes setforth.

In testimony whereof we have signed our names to this specification inthe presence of two subscribing witnesses.

GORDON MGKAY. HADLEY P. FAIRFIELD. Witnesses:

GEO. W. HAMMATT, A. L. PICKETT.

